Developer Tools
ApiNotes
API documentation tool with automatic changelogs and breaking-change detection
Generate interactive REST API documentation from OpenAPI or Swagger specs with automatic changelog generation, breaking-change alerts, and live API testing.
Overview
A look at apinotes.io
ApiNotes turns OpenAPI and Swagger specifications into interactive REST API documentation with automatic changelog generation. Every time you push a new spec version, the tool automatically detects breaking changes, updates your documentation, and notifies subscribers via email.
The platform includes built-in interactive API testing (Try-It-Now), code examples in 10+ programming languages, and a customizable developer portal. It supports OpenAPI 3.1, 3.0, Swagger 2.0 in both YAML and JSON formats, and integrates with GitHub through GitHub Actions.
ApiNotes also provides complementary tools including an OpenAPI Validator, Spec Diff Tool for comparing versions, and a cURL to OpenAPI converter. Documentation can be hosted on custom domains with custom branding and themes.
Feature notes
- Automatic API Changelog Generation
- Breaking-Change Detection & Diffs
- Interactive REST API Documentation
- OpenAPI 3.1, 3.0 & Swagger 2.0 Support
- Code Examples in 10+ Languages
- Custom Domain Support
- GitHub Integration
- OpenAPI Validator
- Spec Diff Tool
- cURL to OpenAPI Converter
Pricing
Pricing model: Freemium
Starter: Free (1 API, public only, up to 25 subscribers); Team: $19/month (5 APIs, unlimited subscribers)
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FAQ
- What is an API documentation tool?
- An API documentation tool helps developers create, publish, and maintain professional API reference documentation automatically. ApiNotes generates interactive REST API docs from your OpenAPI or Swagger specification with live endpoint testing, code examples in 10+ languages, and a shareable developer portal.
- How do I get a changelog and docs from an OpenAPI spec?
- With ApiNotes, choose a URL for your docs, paste, upload, or link your OpenAPI 3.x or Swagger 2.0 specification, then click Generate Docs to publish. Your changelog and interactive docs are live in under 60 seconds, and every future spec push adds a new changelog entry automatically.
- What formats does ApiNotes support?
- ApiNotes currently supports OpenAPI 3.0, OpenAPI 3.1, and Swagger 2.0 specifications in both YAML and JSON formats. Coming soon: automatic conversion from Postman Collections, Bruno, and Insomnia exports.
- Can I use my own custom domain?
- Yes. Every plan includes subdomain hosting and the ability to connect your own custom domain. Point a CNAME record to ApiNotes and your changelog and docs are served from your brand's domain.
- How do I generate API documentation from an OpenAPI spec?
- With ApiNotes, it takes three steps: 1) Choose a URL for your docs (e.g., my-api.apinotes.io), 2) Paste, upload, or link your OpenAPI 3.x or Swagger 2.0 specification, 3) Click Generate Docs and publish. Your interactive API documentation is live in under 60 seconds.
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